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POempty MEX file Crashes
 

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  1. POempty MEX file Crashes
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    <p>i am trying to run a mex file i created and compiled. However, the program crashes when i attempt to use that mex file with the message:</p> <pre><code>Program received signal SIGSEGV, Segmentation fault. 0x0000000000000001 in ?? () </code></pre> <p>In order to attempt and debug the problem, i cleared the file completly, leaving only:</p> <pre><code>#include "mex.h" #include "lsm_fast_marching_method.h" /* Input Arguments */ #define PHI (prhs[0]) #define BACKGROUND (prhs[1]) /* Output Arguments */ #define SKELETON (plhs[0]) void mexFunction(int nlhs, mxArray *plhs[], int nrhs, const mxArray *prhs[]) { return; } </code></pre> <p>Header file contents:</p> <pre><code>#ifndef included_fast_marching_method_h #define included_fast_marching_method_h #ifdef __cplusplus extern "C" { #endif int computeExtensionFields2d( double *distance_function, double **extension_fields, double *phi, double *mark, double **source_fields, int num_extension_fields, int spatial_derivative_order, int *grid_dims, double *dx); int computeExtensionFields2d_WithMaxVal( double *distance_function, double **extension_fields, double *phi, double *mark, double **source_fields, int num_extension_fields, int spatial_derivative_order, int *grid_dims, double *dx, double max_value); int computeDistanceFunction2d( double *distance_function, double *phi, double *mark, int spatial_derivative_order, int *grid_dims, double *dx); int solveEikonalEquation2d( double *phi, double *speed, double *mask, int spatial_derivative_order, int *grid_dims, double *dx); int computeExtensionFields3d( double *distance_function, double **extension_fields, double *phi, double *mask, double **source_fields, int num_extension_fields, int spatial_derivative_order, int *grid_dims, double *dx); int computeDistanceFunction3d( double *distance_function, double *phi, double *mask, int spatial_derivative_order, int *grid_dims, double *dx); int solveEikonalEquation3d( double *phi, double *speed, double *mask, int spatial_derivative_order, int *grid_dims, double *dx); int doHomotopicThinning( double *thinned_img, double *phi, double *background, int *grid_dims); bool isSimplePoint(int* grid_point_status, double* background, int* grid_idx, int neighbors[][3], int* grid_dims); #ifdef __cplusplus } #endif #endif </code></pre> <p>But the program still crashes with the same error!! I tried running it at a debugger outside Matlab (GDB) and it still crashes with the same message..</p> <p>I am using a linux 64bit system.</p> <p>Any idea as to how this is happening? </p> <p>Thanks in advance.</p>
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    1. USMenyh
    1. USMenyh
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    1. COAny chance you used 32bit compiler and 32bit matlab?
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      1. POempty MEX file Crashes
      1. USAndrey Rubshtein
    2. COwhat is the content of `#include "lsm_fast_marching_method.h"`? Also, it is not a good idea to define macros as elements of array which can be of zero size.
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      1. POempty MEX file Crashes
      1. USItamar Katz
    3. COi've added the header file
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      1. POempty MEX file Crashes
      1. USMenyh
 

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